drm/i915/perf: add more debug message on perf open & configs

This will make it easier to spot issues related to config
creation/usage.

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180326090831.22686-9-lionel.g.landwerlin@intel.com

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index d41a252..bfc906c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -2096,13 +2096,17 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 
        if (stream->ctx) {
                ret = oa_get_render_ctx_id(stream);
-               if (ret)
+               if (ret) {
+                       DRM_DEBUG("Invalid context id to filter with\n");
                        return ret;
+               }
        }
 
        ret = get_oa_config(dev_priv, props->metrics_set, &stream->oa_config);
-       if (ret)
+       if (ret) {
+               DRM_DEBUG("Invalid OA config id=%i\n", props->metrics_set);
                goto err_config;
+       }
 
        /* PRM - observability performance counters:
         *
@@ -2129,8 +2133,10 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
 
        ret = dev_priv->perf.oa.ops.enable_metric_set(dev_priv,
                                                      stream->oa_config);
-       if (ret)
+       if (ret) {
+               DRM_DEBUG("Unable to enable metric set\n");
                goto err_enable;
+       }
 
        stream->ops = &i915_oa_stream_ops;
 
@@ -3292,6 +3298,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
 
        mutex_unlock(&dev_priv->perf.metrics_lock);
 
+       DRM_DEBUG("Added config %s id=%i\n", oa_config->uuid, oa_config->id);
+
        return oa_config->id;
 
 sysfs_err:
@@ -3348,6 +3356,9 @@ int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
                           &oa_config->sysfs_metric);
 
        idr_remove(&dev_priv->perf.metrics_idr, *arg);
+
+       DRM_DEBUG("Removed config %s id=%i\n", oa_config->uuid, oa_config->id);
+
        put_oa_config(dev_priv, oa_config);
 
 config_err: